Artem Stryzhak, a Ukrainian national, has pleaded guilty to his involvement in a series of global ransomware attacks. He appeared in a federal court in Brooklyn and admitted to conspiracy to commit fraud and related computer extortion offenses. Stryzhak was arrested in Spain in June 2024 and was extradited to the United States on April 30. He faces a potential sentence of up to 10 years in prison. His alleged co-conspirator, Volodymyr Tymoshchuk, remains at large, with the U.S. Department of State offering a reward of $11 million for information leading to his arrest or conviction.
Court records indicate that Stryzhak and his associates used the Nefilim ransomware to access and encrypt the digital systems of large companies, mainly in the United States, Canada, and Australia. The attackers demanded ransom payments and threatened to release the stolen data on “Corporate Leaks” websites if their demands were not met. After gaining unauthorized access to company networks, they reportedly researched their targets using online databases to gather financial and contact information, according to the U.S. Attorney’s office.
United States Attorney Joseph Nocella acknowledged the cooperation of international and federal law enforcement agencies, including the FBI’s New York Field Office and Spanish authorities, in Stryzhak’s arrest. He stated that the conviction reflects the Office’s commitment to holding individuals accountable for cybercrimes. The search continues for Tymoshchuk, identified as a key administrator of the Nefilim ransomware, whose current location remains unknown.
The FBI highlighted its ongoing efforts to investigate cybercrime. Special Agent in Charge Christopher J.S. Johnson of the FBI Springfield stated that the agency traces digital activity across networks and international borders to identify those responsible. Analysis of digital evidence contributed to Stryzhak’s prosecution.
The case is being managed by the Office’s National Security and Cybercrime Section, with Assistant United States Attorneys Alexander F. Mindlin and Ellen H. Sise, and Trial Attorney Brian Mund of the Computer Crime and Intellectual Property Section, assisted by Paralegal Specialist Rebecca Roth. The public can report any information regarding Tymoshchuk or related individuals to the FBI at +1-917-242-1407 or via email at [email protected]. Information about the State Department’s reward offer is available on its website, and tips can also be submitted to a local FBI office in the United States or to any U.S. embassy abroad.
.jpg){kind=link}